Mucophagy
The Top 10 Craziest Science Stuff you didn’t know has quite a few awesome facts. For instance, regarding eating your boogers (mucophagy):
Some research suggests that mucophagy may be a natural and even healthy activity, which exposes the digestive system to bacteria accumulated in the mucus, thereby helping to strengthen the immune system.
I’ve been saying the same thing for years. 
Along with that awesome fact are “Men can breastfeed”, “The Gay Bomb”, “Erections After Death”, “Hypnotizing Chickens”, and a few others. You should go and read them all. Be sure to read the comments as well because I was literally LOLing after reading some of them, so don’t miss out on that.
Although boogers as you may claim might boost you immune system just remember that some of those bacteria shouldn’t be going into your mouth. Think about Staph infections!!!!!! and passing them on. If you pick your boogers please, please wash your hands after!!!!! Infact belive what you want the social aspect of the ideas is unconstitional.